Project Title

HEART RATE, WEIGHT LOSS, AND RPE RESPONSE TO SUBMAXIMAL WALKING TEST

Presenter Hometown

frankfort

Major

fitness and wellness managment

Department

Exercise and Sport Science

Degree

Undergraduate

Mentor

Dr. Michael T. Lane

Mentor Department

Exercise and Sport Science

Abstract

Introduction: Fire protection gear holds a singular function for protecting fire fighters in the field, but there is limited research on the metabolic cost when wearing the equipment. Being unaware of how taxing the gear is could put fire fighters in dangerous situations, specifically relative to the size of the individual. Standard firefighter training tests lack the encumbrance of the gear, providing an inadequate sense of preparedness. PURPOSE: To establish the additional metabolic cost of fire gear on individuals during a low intensity aerobic task. METHODS: 14 college students, age (22±4) height (175.5±7.1cm) weight (77.4±13.6kg) performed the Bruce submaximal walking test in standard gym clothes (familiarization),[LM1] [JI2] personal protective equipment (PPE), SCBA pack and mask, and full gear (combination of PPE and SCBA). Each subject completed 4 sessions total. Gear for each visit was determined using a randomized cross-over design excluding the familiarization. Each subject was weighed before and after the walking test with weight loss recorded. The original Bruce submaximal protocol was adjusted to (stage 1) 3 minutes (min) at 1.7 MPH and 0% grade(GR), (stage 2) 3 min at 1.7 MPH and 10% GR, (stage 3) 3 min at 2.5 MPH and 12% GR, (stage 4) 3 min at 3.4 MPH and 14% GR, (stage 5) 4 min cool down at 1.7 MPH and 0% GR. Familiarization used the same adjusted protocol but increased stage 4 to 6 min. Heart rate and Rate of Perceived Exertion were recorded during each minute of testing. Results were compared using a two-way ANOVA with Post Hoc LSD analysis and repeated measures. RESULTS[LM3] [JI4] : Overall there was significantly greater weight loss (.22±.1kg) in the full gear visit compared to the PPE (PCONCLUSIONS:In conclusion we found that fire gear has a greater metabolic cost than standard gym clothes. Also, we discovered that full fire gear had a profound effect on the heart rates, Rate of perceived exertion, and weight loss in subjects during the Bruce walking protocol. We also found that PPE compared to SCBA pack and mask caused significantly greater weight loss. This sparks interest because both combinations of gear are approximately equal in weight. Future research should investigate testing the metabolic demands of fire gear during firefighter specific tasks.

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Poster

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HEART RATE, WEIGHT LOSS, AND RPE RESPONSE TO SUBMAXIMAL WALKING TEST

Introduction: Fire protection gear holds a singular function for protecting fire fighters in the field, but there is limited research on the metabolic cost when wearing the equipment. Being unaware of how taxing the gear is could put fire fighters in dangerous situations, specifically relative to the size of the individual. Standard firefighter training tests lack the encumbrance of the gear, providing an inadequate sense of preparedness. PURPOSE: To establish the additional metabolic cost of fire gear on individuals during a low intensity aerobic task. METHODS: 14 college students, age (22±4) height (175.5±7.1cm) weight (77.4±13.6kg) performed the Bruce submaximal walking test in standard gym clothes (familiarization),[LM1] [JI2] personal protective equipment (PPE), SCBA pack and mask, and full gear (combination of PPE and SCBA). Each subject completed 4 sessions total. Gear for each visit was determined using a randomized cross-over design excluding the familiarization. Each subject was weighed before and after the walking test with weight loss recorded. The original Bruce submaximal protocol was adjusted to (stage 1) 3 minutes (min) at 1.7 MPH and 0% grade(GR), (stage 2) 3 min at 1.7 MPH and 10% GR, (stage 3) 3 min at 2.5 MPH and 12% GR, (stage 4) 3 min at 3.4 MPH and 14% GR, (stage 5) 4 min cool down at 1.7 MPH and 0% GR. Familiarization used the same adjusted protocol but increased stage 4 to 6 min. Heart rate and Rate of Perceived Exertion were recorded during each minute of testing. Results were compared using a two-way ANOVA with Post Hoc LSD analysis and repeated measures. RESULTS[LM3] [JI4] : Overall there was significantly greater weight loss (.22±.1kg) in the full gear visit compared to the PPE (PCONCLUSIONS:In conclusion we found that fire gear has a greater metabolic cost than standard gym clothes. Also, we discovered that full fire gear had a profound effect on the heart rates, Rate of perceived exertion, and weight loss in subjects during the Bruce walking protocol. We also found that PPE compared to SCBA pack and mask caused significantly greater weight loss. This sparks interest because both combinations of gear are approximately equal in weight. Future research should investigate testing the metabolic demands of fire gear during firefighter specific tasks.